
Unit Operation
57
2
Check Evaporator
Coil Sensor
Manually monitor load
temperature. Report
alarm at end of the day.
3
Check (Control)
Return Air Sensor
Manually monitor load
temperature. Report
alarm at end of the day.
4
Check (Control)
Discharge Air Sensor
Manually monitor load
temperature. Report
alarm at end of the day.
5
Check Ambient Air
Sensor
Report alarm at end of
the day.
6
Check Coolant Temp
Sensor
Report alarm at end of
the day.
7
Check Engine RPM
Sensor
Report alarm at end of
the day.
9
High Evaporator
Temperature
Manually monitor load
temperature. Report
alarm at end of the day.
Code Description Operator Help
10
High Discharge
Pressure
If unit is shut down repair
immediately. Otherwise,
report alarm at end of the
day.
11
Unit Controlling on
Alternate Sensor
Manually monitor load
temperature. Report
alarm at end of the day.
12
Sensor or Digital
Input Shutdown
The indicated zone is not
longer able to operate
and has been shut down.
Repair immediately.
13 Sensor Check
Manually monitor load
temperature. Report
alarm at end of the day.
15
Check Glow Plugs or
Intake Air Heater
If unit is shut down repair
immediately. Otherwise,
report alarm at end of the
day.
Code Description Operator Help
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